package JavaBase.MultiThread;

import java.text.SimpleDateFormat;
import java.util.Random;

public class ThreadLocalExample implements Runnable{

    public static final ThreadLocal<SimpleDateFormat> formatter = ThreadLocal.withInitial(()->new SimpleDateFormat("yyyyMMdd HHmm"));
    public static void main(String[] args) throws InterruptedException {
        ThreadLocalExample obj = new ThreadLocalExample();
        for(int i=0 ; i<10; i++){
            Thread t = new Thread(obj, ""+i);
            Thread.sleep(new Random().nextInt(1000));
            t.start();
        }
    }


    @Override
    public void run() {
        System.out.println("Thread Name="+Thread.currentThread().getName() +" "+formatter.get().toPattern());
        try {
            Thread.sleep(new Random().nextInt(1000));
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        formatter.set(new SimpleDateFormat());
        System.out.println("Thread Name= "+Thread.currentThread().getName()+" formatter = "+formatter.get().toPattern());
    }
}
